The film is about a dog that looks to discover his purpose in life over the course of several lifetimes and owners. It turns out that human beings are not the only ones that have existential thoughts such as the meaning of life. Man’s best friend is also looking for purpose, hence the title ‘A Dog’s Purpose’. Except the caveat here is that these beloved canines are able to reincarnate into new bodies, sometimes switching up breeds and genders.